Dehydration device for high-viscosity bio-based epoxy resin

Abstract

The utility model relates to the related technical field of epoxy resin processing, in particular to a dehydration device for high-viscosity bio-based epoxy resin, which comprises a dehydration tank body, an air exhaust mechanism is arranged on the outer side of the dehydration tank body, and a waste heat recovery mechanism is arranged on the outer side of the dehydration tank body. Through the arrangement of the air exhaust mechanism, the ultrasonic generator is matched with the oscillation head to generate ultrasonic waves, water diffusion is accelerated, the driving pump extracts water vapor in the tank body to form a negative pressure environment, the boiling point of water is lowered through negative pressure, more water is promoted to be evaporated rapidly, and the dehydration effect is further enhanced; through the arrangement of a straight condenser pipe, pumped-out water vapor can be effectively cooled and condensed into liquid water, the water vapor is separated from high-viscosity bio-based epoxy resin, the purity of the dehydrated epoxy resin is improved, a heat exchanger of the waste heat recovery mechanism collects waste heat emitted by the dehydration tank body, materials in the feeding pipeline are preheated after the waste heat is absorbed, and the dehydration efficiency is improved. And the energy utilization efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of epoxy resin processing, and in particular to a dehydration device for high-viscosity bio-based epoxy resin. Background Technology

[0002] High-viscosity bio-based epoxy resins often contain a certain amount of water during synthesis and processing. The presence of this water can have many adverse effects on the performance of bio-based epoxy resins. Therefore, a dehydration device for high-viscosity bio-based epoxy resins is particularly needed.

[0003] A dehydration device for epoxy resin production and processing, authorized by announcement number CN220446868U, includes a heating chamber and a feed pipe. A discharge pipe is fixedly fitted inside the bottom inner ring of the heating chamber, and a solenoid valve is installed on the discharge pipe. The feed pipe is fixedly fitted inside the top inner ring of the heating chamber. The top of the heating chamber is equipped with an intermittent mechanism for controlling the discharge from the feed pipe and a mixing mechanism for stirring, including a connecting shaft. The lower and upper scrapers can remove epoxy resin adhering to the heating chamber, while the stirring blades tumble and stir the epoxy resin in the middle, allowing the epoxy resin located inside to flow to the outside, thereby increasing the dehydration efficiency of the epoxy resin. Through the cooperation of the crankshaft, connecting sleeve, and connecting rod, the piston baffle can continuously reciprocate inside the feed pipe, thereby controlling the falling speed of the epoxy resin and improving the dehydration efficiency of the heating chamber. However, this device evaporates water by heating, and if the evaporated water vapor does not exit the heating chamber, it will cause the water vapor to re-condense inside the chamber, thus reducing the dehydration efficiency.

[0004] To address the aforementioned issues, a dehydration device for high-viscosity bio-based epoxy resin is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a dehydration device for high-viscosity bio-based epoxy resin, in order to solve the problem of existing dehydration devices for high-viscosity bio-based epoxy resin mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dehydration device for high viscosity bio-based epoxy resin, comprising a dehydration tank, an air extraction mechanism on the outside of the dehydration tank, and a waste heat recovery mechanism on the outside of the dehydration tank;

[0007] The air extraction mechanism includes an oscillating head installed on the inner wall of the dehydration tank, an air outlet pipe on one side of the dehydration tank, a straight condenser pipe at one end of the dehydration tank, a water outlet on the upper side of the straight condenser pipe, a water inlet on the lower side of the straight condenser pipe, and a water collection bucket at the bottom of the straight condenser pipe.

[0008] Preferably, the top of the dehydration tank is sealed with a tank cover, the surface of the dehydration tank is fitted with an installation plate, and the top of the tank cover is provided with a feed pipe.

[0009] Preferably, the air extraction mechanism further includes an ultrasonic generator installed on one side of the oscillating head connection end, a drive pump is sealed to the end of the air outlet pipe, and an air inlet is provided on the top of the water collection tank.

[0010] Preferably, the outlet of the drive pump is sealed to the top of the straight condenser tube, and the bottom of the straight condenser tube is sealed to the inlet.

[0011] Preferably, the waste heat recovery mechanism includes a heat exchanger sleeved on the outside of the dehydration tank, a fixing member sleeved on the outside of the heat exchanger, a first pipe sealed to one side of the heat exchanger, a second pipe sealed to one side of the heat exchanger, a third pipe sealed to one side of the heat exchanger, a preheating section sealed to one end of the first pipe, and a circulation pump sealed to one end of the second pipe.

[0012] Preferably, the end of the third pipe is sealed to the outlet end of the circulating pump, and the first, second and third pipes are all inserted through the side wall of the fixing member and sealed to the heat exchanger respectively.

[0013] Preferably, the preheating section is fitted onto the surface of the feed pipe.

[0014] Preferably, both the ultrasonic generator and the drive pump are located on the top of the mounting plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The dehydration device for this high-viscosity bio-based epoxy resin is equipped with an air extraction mechanism. An ultrasonic generator and an oscillating head work together to generate ultrasonic waves, which accelerate the diffusion of moisture, break up the agglomeration structure of the epoxy resin, and make it easier for moisture to separate. The pump drives the pump to extract water vapor from the tank to create a negative pressure environment. Based on the relationship between the boiling point of water and air pressure, the negative pressure lowers the boiling point of water, causing more water to evaporate quickly and further enhancing the dehydration effect. The straight condenser tube can effectively cool and condense the extracted water vapor into liquid water, so that the water vapor is separated from the high-viscosity bio-based epoxy resin and the purity of the epoxy resin after dehydration is improved.

[0017] The heat exchanger of the waste heat recovery unit collects the waste heat emitted by the dehydration tank. The heat exchange medium flows in the circulation loop formed by the heat exchanger and various pipes, and after absorbing the waste heat, it preheats the material in the feed pipe, thereby improving energy utilization efficiency. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural schematic diagram of the air extraction mechanism of this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0021] Figure 4 This is a schematic diagram of the straight condenser tube in the air extraction mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the waste heat recovery mechanism of this utility model.

[0023] In the diagram: 1. Dehydration tank; 2. Air extraction mechanism; 201. Oscillating head; 202. Air outlet pipe; 203. Straight condenser pipe; 204. Water outlet; 205. Water inlet; 206. Water collection tank; 207. Ultrasonic generator; 208. Drive pump; 209. Air inlet; 3. Waste heat recovery mechanism; 301. Heat exchanger; 302. Fixture; 303. First pipe; 304. Second pipe; 305. Third pipe; 306. Preheating section; 307. Circulation pump; 4. Tank cover; 5. Mounting plate; 6. Feed pipe. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Example

[0026] like Figure 1-4 As shown, the device includes a dehydration tank 1, an air extraction mechanism 2 on the outside of the dehydration tank 1, a waste heat recovery mechanism 3 on the outside of the dehydration tank 1, a tank cover 4 sealed on the top of the dehydration tank 1, an installation plate 5 fitted on the surface of the dehydration tank 1, a feed pipe 6 on the top of the tank cover 4, an air extraction mechanism 2 including an oscillating head 201 installed on the inner wall of the dehydration tank 1, an air outlet pipe 202 on one side of the dehydration tank 1, a straight condenser pipe 203 at one end of the dehydration tank 1, a water outlet 204 on the upper side of the straight condenser pipe 203, a water inlet 205 on the lower side of the straight condenser pipe 203, a water collection tank 206 at the bottom of the straight condenser pipe 203, an ultrasonic generator 207 installed on one side of the connection end of the oscillating head 201, a drive pump 208 sealed to the end of the air outlet pipe 202, and an air inlet 209 on the top of the water collection tank 206.

[0027] It should be noted that in this embodiment, after the water evaporates rapidly, the drive pump 208 is started. The drive pump 208 is connected to the dehydration tank 1 through the gas outlet pipe 202. By extracting the water vapor evaporated inside the tank, a negative pressure environment is gradually formed inside the dehydration tank 1. The negative pressure environment further lowers the boiling point of water, promoting more water to evaporate quickly and enhancing the dehydration effect. The mixed gas containing water vapor extracted from the dehydration tank 1 is transported to the top of the straight condenser pipe 203 under the action of the drive pump 208. The water inlet 205 on the lower side of the straight condenser pipe 203 is connected to an external cooling system. The cooling water source fills the outer casing of the straight condenser tube 203 with cooling water, and then flows out from the outlet 204 on the upper side, forming a continuous cooling water circulation. When the hot water vapor flows inside the straight condenser tube 203, it exchanges heat with the cooler casing wall. The water vapor liquefies upon encountering the cold and gradually condenses into liquid water. Under the action of gravity, the condensed liquid water flows down along the inner wall of the straight condenser tube 203 and finally flows out from the bottom of the straight condenser tube 203. It enters the water collection tank 206 through a pipe that is sealed to the air inlet 209 at the top of the water collection tank 206 and is collected.

[0028] During dehydration, the ultrasonic generator 207 is first turned on. The ultrasonic generator 207 is connected to the oscillating head 201 installed on the inner wall of the dehydration tank 1, and the connection between the oscillating head 201 and the ultrasonic generator 207 is located on one side of the dehydration tank 1. The connection is sealed to the dehydration tank 1 by a sealing plate. The ultrasonic generator 207 generates a high-frequency electrical signal, which is converted into ultrasonic energy by the oscillating head 201 and transmitted to the high-viscosity bio-based epoxy resin in the tank. The cavitation effect of the ultrasonic waves will generate a large number of tiny bubbles inside the epoxy resin. During the generation and collapse of the bubbles, on the one hand, the diffusion of water is accelerated, making it easier for water to be separated from the epoxy resin; on the other hand, it helps to break the agglomeration structure of the epoxy resin itself, making the internal material distribution more uniform.

[0029] like Figure 5 As shown, the waste heat recovery mechanism 3 includes a heat exchanger 301 sleeved on the outside of the dehydration tank 1, a fixing member 302 sleeved on the outside of the heat exchanger 301, a first pipe 303 sealed to one side of the heat exchanger 301, a second pipe 304 sealed to one side of the heat exchanger 301, a third pipe 305 sealed to one side of the heat exchanger 301, a preheating section 306 sealed to one side of the end of the first pipe 303, and a circulation pump 307 sealed to one side of the connection end of the second pipe 304.

[0030] It should be noted that in this embodiment, during the dehydration process, the dehydration tank 1 emits a large amount of heat. The heat exchanger 301 surrounding the outside of the dehydration tank 1 is installed on the tank with the help of the fixing member 302 on the outside. After the circulation pump 307 is started, the circulation pump 307 delivers the heat exchange medium to the heat exchanger 301 through the third pipe 305. After absorbing the residual heat emitted by the dehydration tank 1 in the heat exchanger 301, the heat exchange medium flows out through the second pipe 304 and returns to the outlet end of the circulation pump 307 to form a circulation loop. At the same time, part of the heat exchange medium flows into the preheating section 306 sleeved on the surface of the feed pipe 6 through the first pipe 303. In the preheating section 306, the heat exchange medium transfers heat to the high viscosity bio-based epoxy resin in the feed pipe 6 to preheat it.

[0031] Working principle of this utility model:

[0032] Refer to the instruction manual appendix Figure 1-5 During dehydration, the ultrasonic generator 207 is turned on first. The ultrasonic generator 207 is connected to the oscillating head 201 installed on the inner wall of the dehydration tank 1, and the connection between the oscillating head 201 and the ultrasonic generator 207 is located on one side of the dehydration tank 1. The connection is sealed to the dehydration tank 1 by a sealing plate. The ultrasonic generator 207 generates a high-frequency electrical signal, which is converted into ultrasonic energy by the oscillating head 201 and transmitted to the high-viscosity bio-based epoxy resin in the tank. The cavitation effect of the ultrasonic waves will generate a large number of tiny bubbles inside the epoxy resin. During the generation and collapse of the bubbles, on the one hand, the diffusion of water is accelerated, making it easier for water to be removed from the epoxy resin; on the other hand, it helps to break the agglomeration structure of the epoxy resin itself, making the internal material distribution more uniform.

[0033] After the water evaporates rapidly, the drive pump 208 is activated. The drive pump 208 is connected to the dehydration tank 1 via the exhaust pipe 202. By extracting the evaporated water vapor from the tank, a negative pressure environment gradually forms inside the dehydration tank 1. This negative pressure environment further lowers the boiling point of water, promoting faster evaporation of more water and enhancing the dehydration effect. The water vapor mixture extracted from the dehydration tank 1 is then transported to the top of the straight condenser tube 203 by the drive pump 208. The water inlet 205 on the lower side of the straight condenser tube 203 is connected to an external cooling water source, allowing the cooling water to flow through the tank. The outer casing of the straight condenser tube 203 is filled with water, which then flows out from the upper side outlet 204 and is discharged into the water tank, forming a continuous cooling water circulation. When the hot water vapor flows inside the straight condenser tube 203, it exchanges heat with the cooler casing wall. The water vapor liquefies upon cooling and gradually condenses into liquid water. Under the action of gravity, the condensed liquid water flows down along the inner wall of the straight condenser tube 203 and finally flows out from the bottom of the straight condenser tube 203. It enters the water collection tank 206 through a pipe that is sealed to the air inlet 209 at the top of the water collection tank 206 and is collected.

[0034] During the dehydration process, the dehydration tank 1 emits a large amount of heat. The heat exchanger 301 surrounding the outside of the dehydration tank 1 is installed on the tank with the help of the fixing parts 302 on the outside. After the circulation pump 307 is started, the circulation pump 307 delivers the heat exchange medium to the heat exchanger 301 through the third pipe 305. After absorbing the residual heat emitted by the dehydration tank 1 in the heat exchanger 301, the heat exchange medium flows out through the second pipe 304 and returns to the outlet end of the circulation pump 307, forming a circulation loop. At the same time, part of the heat exchange medium flows into the preheating section 306 fitted on the surface of the feed pipe 6 through the first pipe 303. In the preheating section 306, the heat exchange medium transfers heat to the high viscosity bio-based epoxy resin in the feed pipe 6 to preheat it.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dewatering device for high viscosity bio-based epoxy resins, comprising a dewatering tank (1), characterized in that: The dehydration tank (1) is provided with an air extraction mechanism (2) on the outside and a waste heat recovery mechanism (3) on the outside of the dehydration tank (1). The air extraction mechanism (2) includes an oscillating head (201) installed on the inner wall of the dehydration tank (1), an air outlet pipe (202) on one side of the dehydration tank (1), a straight condenser pipe (203) at one end of the dehydration tank (1), a water outlet (204) on the upper side of the straight condenser pipe (203), a water inlet (205) on the lower side of the straight condenser pipe (203), and a water collection bucket (206) at the bottom of the straight condenser pipe (203).

2. The apparatus for dewatering a high viscosity bio-based epoxy resin of claim 1, wherein: The top of the dehydration tank (1) is sealed with a tank cover (4), and the surface of the dehydration tank (1) is fitted with an installation plate (5). The top of the tank cover (4) is provided with a feed pipe (6).

3. The apparatus for dewatering a high viscosity bio-based epoxy resin of claim 1, wherein: The air extraction mechanism (2) also includes an ultrasonic generator (207) installed on one side of the connection end of the oscillating head (201), a drive pump (208) is sealed at the end of the air outlet pipe (202), and an air inlet (209) is provided on the top of the water collection tank (206).

4. The apparatus for dewatering a high viscosity bio-based epoxy resin of claim 3, wherein: The outlet of the drive pump (208) is sealed to the top of the straight condenser tube (203), and the bottom of the straight condenser tube (203) is sealed to the inlet (209).

5. The apparatus for dewatering a high viscosity bio-based epoxy resin of claim 1, wherein: The waste heat recovery mechanism (3) includes a heat exchanger (301) sleeved on the outside of the dehydration tank (1), a fixing member (302) sleeved on the outside of the heat exchanger (301), a first pipe (303) sealed to one side of the heat exchanger (301), a second pipe (304) sealed to one side of the heat exchanger (301), a third pipe (305) sealed to one side of the heat exchanger (301), a preheating section (306) sealed to one side of the end of the first pipe (303), and a circulating pump (307) sealed to one side of the connection end of the second pipe (304).

6. A device for dewatering a high viscosity bio-based epoxy resin according to claim 5, characterized in that: The end of the third pipe (305) is sealed to the outlet end of the circulating pump (307). The first pipe (303), the second pipe (304) and the third pipe (305) are all inserted through the side wall of the fixing member (302) and sealed to the heat exchanger (301) respectively.

7. The apparatus for dewatering a high viscosity bio-based epoxy resin of claim 5, wherein: The preheating section (306) is fitted onto the surface of the feed pipe (6).

8. The apparatus for dewatering a high viscosity bio-based epoxy resin of claim 3, wherein: The ultrasonic generator (207) and the drive pump (208) are both located on the top of the mounting plate (5).

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